<template>
  <div>
    <div class="search">
      <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音" />
    </div>
    <div
      class="search-content"
      ref="search"
      v-show="keyword"
    >
      <ul>
        <li
          class="search-item border-bottom"
          v-for="item of list"
          :key="item.id"
          @click="handleCityClick(item.name)"
        >
          {{item.name}}
        </li>
        <li class="search-item border-bottom" v-show="!this.list.length">
          没有找到匹配数据
        </li>
      </ul>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'

export default {
	name: 'CitySearch',
	props: {
		cities: Object
	},
	
	data () {
		return {
			keyword: '',
			list: [],
			timer: null
		}
	},
	computed: {
		hasNoData (){
			!this.list.length
		}
	},
	
	
	watch: {
		keyword () {
			if(this.timer){
				clearTimeout(this.timer)
			}
			if(!this.keyword){
				this.list = []
				return
			}
			this.timer=setTimeout(()=>{
				const result= []
				for (let i in this.cities){
					this.cities[i].forEach((value)=>{
						if(value.spell.indexOf(this.keyword) > -1 ||
						   value.name.indexOf(this.keyword) > -1){
							result.push(value)
						}
					})
				}
				this.list=result
			},100)
		}
	},
	methods: {
		handleCityClick (city) {
			this.$store.dispatch('changeCity',city)
			this.$router.push("/")
		}
	},
	mounted () {
	this.scroll = new Bscroll(this.$refs.search,{})	
	}
	
}
</script>

<style lang="stylus" scoped>
@import '~@/assets/styles/varibles.styl'
  .search
    height: .72rem
    background: $bgColor
    padding: 0 .1rem
    .search-input
      box-sizing: border-box
      padding: 0 .1rem
      width: 100%
      height: .62rem
      line-height: .62rem
      text-align: center
      border-radius: .06rem
      color: #666
  .search-content
    overflow: hidden
    position: absolute
    z-index: 1 
    top: 1.58rem
    left: 0
    right: 0
    bottom: 0
    background: #eee
    .search-item
      line-height: .62rem
      padding-left: .2rem
      background: #fff
      color: #666     
</style>